package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

public class ListValueConstrainValidator implements ConstraintValidator<ListValue,Integer> {

    Set<Integer> set=new HashSet<>();

    /**
     *
     * @param constraintAnnotation 制定的数组
     */
    @Override
    public void initialize(ListValue constraintAnnotation) {
        int[] vals = constraintAnnotation.vals();
        for(int i :vals){
            set.add(i);
        }

    }

    /**
     *
     * @param integer 前端传过来的需要校验的值
     * @param constraintValidatorContext
     * @return
     */
    @Override
    public boolean isValid(Integer integer, ConstraintValidatorContext constraintValidatorContext) {
        return set.contains(integer);
    }
}
